DHCP服务器
eth0:192.168.0.2/24
gw:192.168.0.1
DHCP-Relay
TFTP-Server
Vsftp-Server
(RHEL5)
DHCP中继服务器
TFTP服务器
Vsftp服务器
eth0:192.168.0.1/24
eth1:192.168.1.1/24
eth2:192.168.2.1/24
eth3:192.168.3.1/24
实验步骤：
一、DHCP服务器端配置
1） 设置网卡eth0的IP地址
[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0
# Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
DEVICE=eth0
BOOTPROTO=none
ONBOOT=yes
HWADDR=00:0c:29:7c:1a:c4
NETMASK=255.255.255.0
IPADDR=192.168.0.2
GATEWAY=192.168.0.1
TYPE=Ethernet
2） 安装DHCP服务端
[root@localhost ~]# mount /dev/cdrom /media/
[root@localhost ~]# cd /media/Server/
[root@localhost Server]# rpm -ivh dhcp-3.0.5-18.el5.i386.rpm
3） 配置DHCP服务端
[root@localhost ~]# cp /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample /etc/dhcpd.conf
[root@localhost ~]# vi /etc/dhcpd.conf
ddns-update-style interim;
ignore client-updates;
option subnet-mask 255.255.255.0;
option domain-name-servers 192.168.1.1;
option time-offset -18000; # Eastern Standard Time
default-lease-time 21600;
max-lease-time 43200;
filename "pxelinux.0";
subnet 192.168.0.0 netmask 255.255.255.0 {
option routers 192.168.0.1;
range dynamic-bootp 192.168.0.128 192.168.0.254;
next-server 192.168.0.1;
}
subnet 192.168.1.0 netmask 255.255.255.0 {
option routers 192.168.1.1;
range dynamic-bootp 192.168.1.128 192.168.1.254;
next-server 192.168.1.1;
}
subnet 192.168.2.0 netmask 255.255.255.0 {
option routers 192.168.2.1;
range dynamic-bootp 192.168.2.128 192.168.2.254;
next-server 192.168.2.1;
}
subnet 192.168.3.0 netmask 255.255.255.0 {
option routers 192.168.3.1;
range dynamic-bootp 192.168.3.128 192.168.3.254;
next-server 192.168.3.1;
}
4） 启动DHCP服务
[root@localhost ~]# service dhcpd start
启动 dhcpd： [确定]
[root@localhost ~]# chkconfig dhcpd on
二、DHCP客户服务器上的配置
1）设置网卡eth0、eth1、eth2、eth3的IP地址
[root@localhost ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
inet 127.0.0.1/8 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
inet 192.168.0.1/24 brd 192.168.0.255 scope global eth0
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
inet 192.168.1.1/24 brd 192.168.1.255 scope global eth1
4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
inet 192.168.2.1/24 brd 192.168.2.255 scope global eth2
5: eth3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
inet 192.168.3.1/24 brd 192.168.3.255 scope global eth3
2）安装DHCP客户端服务器
[root@localhost ~]# mount /dev/cdrom /media/
[root@localhost ~]# cd /media/Server/
[root@localhost Server]# rpm -ivh dhcp-3.0.5-18.el5.i386.rpm
3）配置DHCP客户端服务器
[root@localhost ~]# vi /etc/sysconfig/dhcrelay
# Command line options here
INTERFACES="eth0 eth1 eth2 eth3"
DHCPSERVERS="192.168.0.2"
4）启动DHCP客户端服务器
[root@localhost ~]# service dhcrelay start
启动 dhcrelay： [确定]
[root@localhost ~]# chkconfig dhcrelay on
[root@localhost ~]# dhcrelay 192.168.0.2
三、TFTP-Server上的配置
1）安装TFTP-Server服务器
[root@localhost ~]# mount /dev/cdrom /media/
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@localhost ~]# cd /media/Server/
[root@localhost Server]# rpm -ivh tftp-server-0.42-3.1.i386.rpm
2）对TFTP-Server的操作
[root@localhost ~]# rpm -ql syslinux |grep "pxe"
/usr/lib/syslinux/pxelinux.0
/usr/share/doc/syslinux-3.11/pxelinux.doc
[root@localhost ~]# cp /usr/lib/syslinux/pxelinux.0 /tftpboot/
[root@localhost ~]# mkdir -p /tftpboot/pxelinux.cfg/
[root@localhost ~]# cp -rp /media/isolinux/isolinux.cfg /tftpboot/pxelinux.cfg/default
[root@localhost ~]# chmod u+w /tftpboot/pxelinux.cfg/default
[root@localhost ~]# cp -rpf /media/isolinux/* /tftpboot/
3）编辑/tftpboot/pxelinux.cfg/default文件
[root@localhost ~]# vi /tftpboot/pxelinux.cfg/default
default linux
prompt 1
timeout 1
display boot.msg
F1 boot.msg
F2 options.msg
F3 general.msg
F4 param.msg
F5 rescue.msg
label linux
kernel vmlinuz
append initrd=initrd.img ks=ftp://192.168.0.1/ks.cfg
[root@localhost pxelinux.cfg]# gethostip 192.168.1.0
192.168.1.0 192.168.1.0 C0A801
[root@localhost pxelinux.cfg]# gethostip 192.168.2.0
192.168.2.0 192.168.2.0 C0A802
[root@localhost pxelinux.cfg]# gethostip 192.168.3.0
192.168.3.0 192.168.3.0 C0A803
[root@localhost pxelinux.cfg]# cat default > C0A801
[root@localhost pxelinux.cfg]# cat default > C0A802
[root@localhost pxelinux.cfg]# cat default > C0A803
[root@localhost pxelinux.cfg]# vi C0A801
default linux
prompt 1
timeout 1
display boot.msg
F1 boot.msg
F2 options.msg
F3 general.msg
F4 param.msg
F5 rescue.msg
label linux
kernel vmlinuz
append initrd=initrd.img ks=ftp://192.168.0.1/ks1.cfg
[root@localhost pxelinux.cfg]# vi C0A802
default linux
prompt 1
timeout 60
display boot.msg
F1 boot.msg
F2 options.msg
F3 general.msg
F4 param.msg
F5 rescue.msg
label linux
kernel vmlinuz
append initrd=initrd.img ks=ftp://192.168.0.1/ks2.cfg
[root@localhost pxelinux.cfg]# vi C0A803
default linux
prompt 1
timeout 600
display boot.msg
F1 boot.msg
F2 options.msg
F3 general.msg
F4 param.msg
F5 rescue.msg
label linux
kernel vmlinuz
append initrd=initrd.img ks=ftp://192.168.0.1/ks3.cfg
[root@localhost pxelinux.cfg]# ls
C0A801 C0A802 C0A803 default
4） 启动TFTP-Server服务器
[root@localhost ~]# vi /etc/xinetd.d/tftp
service tftp
{
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /tftpboot
disable = no
per_source = 11
cps = 100 2
flags = IPv4
}
[root@localhost ~]# service xinetd restart
停止 xinetd： [确定]
启动 xinetd： [确定]